| Aver-o-Mar to Oerlinghausen | 1,097.42 mi (1,766.13 km) |
| Aver-o-Mar to Oestrich-Winkel | 1,000.01 mi (1,609.36 km) |
| Aver-o-Mar to Offenburg | 948.57 mi (1,526.57 km) |
| Aver-o-Mar to Oftersheim | 1,002.34 mi (1,613.11 km) |
| Aver-o-Mar to Ohrdruf | 1,133.01 mi (1,823.40 km) |
| Aver-o-Mar to Ohringen | 1,034.45 mi (1,664.78 km) |
| Aver-o-Mar to Olbernhau | 1,231.23 mi (1,981.47 km) |
| Aver-o-Mar to Olching | 1,086.59 mi (1,748.69 km) |
| Aver-o-Mar to Oldenburg | 1,131.05 mi (1,820.25 km) |
| Aver-o-Mar to Oldenburg in Holstein | 1,266.23 mi (2,037.80 km) |
| Aver-o-Mar to Olfen | 1,042.87 mi (1,678.35 km) |
| Aver-o-Mar to Olpe | 1,030.86 mi (1,659.00 km) |
| Aver-o-Mar to Olsberg | 1,067.04 mi (1,717.24 km) |
| Aver-o-Mar to Oranienburg | 1,290.09 mi (2,076.21 km) |
| Aver-o-Mar to Ortenberg | 1,052.75 mi (1,694.24 km) |
